•President Trump, arriving in hurricane-ravaged Puerto Rico, said officials should be proud that only 16 died in Hurricane Maria, unlike the “thousands” in “a real catastrophe like Katrina.” That hurricane claimed 1,833 lives.

The comments may further strain relations after Mr. Trump, criticized for a slow federal response, said Puerto Ricans were not doing enough to help themselves.

U.S. officials believe the illnesses resulted from an attack, perhaps by a sonic device, toxin or virus. The State Department has not accused the Cuban government of complicity, but has sought a clear assurance that the attacks would not continue before the Cuban diplomats could return.

The strike, which was backed by the Catalan regional government, also brought public transit to a standstill. The protests took place amid widespread uncertainty over the disputed referendum, which touched off clashes in which more than 900 people were injured.

Now, a team of researchers wants to to determine whether the formations clearly visible on the ocean floor are naturally occurring sandbanks or the remains of an ancient structure. For the pilgrims who flock there, it hardly matters.

Above, the Ramanathaswamy temple.

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Business

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CreditToru Hanai/Reuters

• Nissan Motor will recall all 1.2 million new cars it sold in Japan over the past three years after learning that final inspections were not performed by authorized technicians. The recall could cost as much as $220 million; Nissan’s shares fell more than 5 percent.

Noteworthy

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CreditLendl Tellington/The Franklin Institute

• China’s ancient terra-cotta warriors lost their weapons; they crumbled away during the 2,200 some years that the soldiers were entombed. Now, a museum in Philadelphia lets you arm them with historically accurate weapons — with your phone.

• In memoriam: Jalal Talabani, 83, the Kurdish leader who used pragmatism and guile to survive guerrilla war and the terrors of Saddam Hussein to become the first president of Iraq under its postwar Constitution.

Sputnik burned up in Earth’s atmosphere in January 1958, but test models and replicas continued to circulate. One American collector said he got an original spare Sputnik out of Russia by declaring its two halves as salad bowls.